If you are a ham radio operator of a certain age, you probably remember ads for “The Instructograph,” a mechanical device for learning Morse code. [Our Own Devices] has an ancient specimen of the ...

Morse code, often referred to as continuous wave (CW) in radio circles, has been gradually falling out of use for a long time now. At least in the United States, ham radio licensees don’t have to ...

A guide to codes and signals : international flag code, secret ciphers, weather signals, morse code, sign language, etc., with flags of all nations / by Gordon A.J. Petersen and Marshall McClintock ...

Nothing beats hands-on learning. What could be better than finding out what it was like to send a telegraph message by Morse Code, then trying your hand at it with the Berman Museum’s new interactive ...